EP0409924B1 - Abgasleitung für eine mehrzylindrige kolbenbrennkraftmaschine - Google Patents

Abgasleitung für eine mehrzylindrige kolbenbrennkraftmaschine Download PDF

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Publication number
EP0409924B1
EP0409924B1 EP90900754A EP90900754A EP0409924B1 EP 0409924 B1 EP0409924 B1 EP 0409924B1 EP 90900754 A EP90900754 A EP 90900754A EP 90900754 A EP90900754 A EP 90900754A EP 0409924 B1 EP0409924 B1 EP 0409924B1
Authority
EP
European Patent Office
Prior art keywords
section
housing
plug
internal
combustion engine
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP90900754A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0409924A1 (de
Inventor
Georg Donauer
Otto Reifenscheid
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Rolls Royce Solutions GmbH
Original Assignee
MTU Friedrichshafen GmbH
MTU Motoren und Turbinen Union Friedrichshafen GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by MTU Friedrichshafen GmbH, MTU Motoren und Turbinen Union Friedrichshafen GmbH filed Critical MTU Friedrichshafen GmbH
Priority to AT90900754T priority Critical patent/ATE85402T1/de
Publication of EP0409924A1 publication Critical patent/EP0409924A1/de
Application granted granted Critical
Publication of EP0409924B1 publication Critical patent/EP0409924B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features
    • F01N13/08—Other arrangements or adaptations of exhaust conduits
    • F01N13/10—Other arrangements or adaptations of exhaust conduits of exhaust manifolds
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B75/00—Other engines
    • F02B75/16—Engines characterised by number of cylinders, e.g. single-cylinder engines
    • F02B75/18—Multi-cylinder engines
    • F02B75/22—Multi-cylinder engines with cylinders in V, fan, or star arrangement

Definitions

  • the invention relates to an exhaust pipe for a multi-cylinder piston internal combustion engine according to the preamble of claim 1.
  • Such an exhaust pipe has a very low surface temperature, so that a piston internal combustion engine equipped with it meets the requirements for unattended operation.
  • a generic exhaust pipe is known from DE -C1- 34 45 916.
  • the plug connection interacting with the housing at the exhaust outlet of each cylinder has the task of fixing the section of the inner line in the longitudinal and circumferential directions.
  • the oscillation excitation of the inner line emanating from the pulsating exhaust gas flow cannot be prevented by the known arrangement.
  • the plug-in connection has play between the inner and outer part, as a result of which vibration-reducing support of the sections of the inner line is not possible.
  • the support of the sections of the inner line by the plug connection approximately perpendicular to its longitudinal extension on The housing is ineffective when the exhaust pipe is cold, since there is play between the receptacle and the pin.
  • the support only starts when the play in the plug connection is eliminated due to the difference in thermal expansion. In this way, the sections of the inner line are only supported against the housing when an operating temperature at which vibration excitation would be critical is reached. In contrast, during the heating phase of the exhaust pipe, the thermal expansion of the sections of the inner pipe is not impeded.
  • the plug connection is self-adjusting, that the plug connection of the inner line is easy to assemble and that, in particular when the exhaust line is arranged with two oppositely opening exhaust gas outlets from cylinders, the vibration excitation of the inner line is avoided.
  • the lower part of a liquid-cooled housing for receiving an inner line formed from sections 18 for the exhaust gases of a multi-cylinder piston internal combustion engine is formed by the space 14 of the cylinder crankcase 13 between the rows of cylinders arranged in a V-shape.
  • the length of the sections 18 of the inner line corresponds approximately to the cylinder spacing of the piston internal combustion engine.
  • Each section 18 of the inner line has two exhaust gas inlet openings 16 located approximately in the center of its length, into each of which an exhaust pipe 15 of one cylinder of each row of cylinders opens at an angle.
  • the sections 18 of the inner line are fastened to the cylinder crankcase 13 via flanges 17 approximately centrally to their length.
  • the end faces of the sections 18 face each other with a distance 19 which, due to thermal expansion at operating temperature, is reduced almost to zero.
  • the alternating from the exhaust pipe 15 obliquely for attachment to the flanges 17 on the sections 18 pulsating exhaust gas flow causes a vibration excitation of the inner line.
  • vibrations of the inner line can have an adverse effect on operation when the operating temperature reaches approx. 700 ° C.
  • each section 18 of the inner line is connected to the cylinder crankcase 13 by a plug connection 20 perpendicular to its longitudinal extent.
  • the plug connection 20 consists of a collar bushing 21 inserted and fastened in the cooled wall 22 of the cylinder crankcase 13 and a pin 23 fastened to the section 18.
  • the collar bushing 21 projects with its bottom into the cooling channel 24 of the cylinder crankcase 13 and is thereby intensive chilled.
  • the pin 23, which corresponds to the receiving bore 25 of the collar bushing 21, is detachably fastened to the wall of the section 18 by means of a screw 26 and anvil 27.
  • the pin 23 When the piston internal combustion engine is operating, the pin 23 is heated very strongly by the exhaust gas heat from the inner line. As a result of the temperature increase, the diameter of the pin 23 increases due to thermal expansion. Due to the intensive cooling, the heating of the flange bushing 21 is less than that of the pin 23. This results in a difference in thermal expansion, which consumes the game initially present and leads to a firm fit of the pin 23 in the flange bushing 21. As a result, the vibration-reducing support of the sections 18 of the inner line against the housing occurs when the inner line reaches its critical operating temperature. When the exhaust pipe cools down during interruptions in operation, the tight fit of the pin 23 is released again.
  • the entry of the tight fit of the plug-in connection for a desired temperature level can be determined by a suitable choice of the initial play between the collar bushing 21 and the pin 23.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust Silencers (AREA)
  • Quick-Acting Or Multi-Walled Pipe Joints (AREA)
EP90900754A 1989-01-13 1989-12-14 Abgasleitung für eine mehrzylindrige kolbenbrennkraftmaschine Expired - Lifetime EP0409924B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT90900754T ATE85402T1 (de) 1989-01-13 1989-12-14 Abgasleitung fuer eine mehrzylindrige kolbenbrennkraftmaschine.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3900830A DE3900830C1 (enrdf_load_stackoverflow) 1989-01-13 1989-01-13
DE3900830 1989-01-13

Publications (2)

Publication Number Publication Date
EP0409924A1 EP0409924A1 (de) 1991-01-30
EP0409924B1 true EP0409924B1 (de) 1993-02-03

Family

ID=6372005

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90900754A Expired - Lifetime EP0409924B1 (de) 1989-01-13 1989-12-14 Abgasleitung für eine mehrzylindrige kolbenbrennkraftmaschine

Country Status (9)

Country Link
US (1) US5056310A (enrdf_load_stackoverflow)
EP (1) EP0409924B1 (enrdf_load_stackoverflow)
JP (1) JPH0711246B2 (enrdf_load_stackoverflow)
KR (1) KR940007227B1 (enrdf_load_stackoverflow)
CN (1) CN1012751B (enrdf_load_stackoverflow)
DE (2) DE3900830C1 (enrdf_load_stackoverflow)
ES (1) ES2017575A6 (enrdf_load_stackoverflow)
RU (1) RU1828500C (enrdf_load_stackoverflow)
WO (1) WO1990008250A1 (enrdf_load_stackoverflow)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4224317C1 (de) * 1992-07-23 1993-12-16 Mtu Friedrichshafen Gmbh Einrichtung zur Befestigung eines Gasführungskanals innerhalb eines Gehäuses einer Abgasleitung
DE4229467A1 (de) * 1992-09-03 1994-03-10 Mtu Friedrichshafen Gmbh Lagereinrichtung für die Abgassammelleitung einer Brennkraftmaschine
DE102006012365B4 (de) * 2006-03-17 2014-02-13 Man Diesel & Turbo Se Abgasleitungssystem für mehrzylindrige Gas- und Dieselmotoren
JP4988837B2 (ja) * 2006-06-21 2012-08-01 ダイムラー・アクチェンゲゼルシャフト 排気マニホールド
KR101951069B1 (ko) * 2012-02-29 2019-02-21 히타치 긴조쿠 가부시키가이샤 저융점의 전기 알루미늄 도금용 도금액의 조제 방법, 전기 알루미늄 도금용 도금액, 알루미늄박의 제조 방법, 및 전기 알루미늄 도금용 도금액의 융점을 저하시키는 방법

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4844684B1 (enrdf_load_stackoverflow) * 1970-01-14 1973-12-26
JPS5326250B2 (enrdf_load_stackoverflow) * 1973-12-29 1978-08-01
DE2653263C3 (de) * 1976-11-24 1983-05-11 Mtu Motoren- Und Turbinen-Union Friedrichshafen Gmbh, 7990 Friedrichshafen Abgasleitung
DE3150001C2 (de) * 1981-12-17 1986-08-14 Mtu Motoren- Und Turbinen-Union Friedrichshafen Gmbh, 7990 Friedrichshafen Kolbenbrennkraftmaschine mit Aufladung
DE3445916C1 (de) * 1984-12-17 1986-07-24 Mtu Motoren- Und Turbinen-Union Friedrichshafen Gmbh, 7990 Friedrichshafen Abgasleitung für eine aufgeladene, mehrzylindrige Kolben-Brennkraftmaschine
DE3631312C1 (de) * 1986-09-13 1987-07-02 Mtu Friedrichshafen Gmbh Einrichtung zur Halterung von Abgasleitungen
DE3635478C1 (de) * 1986-10-18 1988-02-11 Mtu Friedrichshafen Gmbh Abgasleitung fuer eine aufgeladene,mehrzylindrige Brennkraftmaschine

Also Published As

Publication number Publication date
CN1045154A (zh) 1990-09-05
JPH0711246B2 (ja) 1995-02-08
WO1990008250A1 (de) 1990-07-26
DE58903471D1 (de) 1993-03-18
US5056310A (en) 1991-10-15
ES2017575A6 (es) 1991-02-16
RU1828500C (ru) 1993-07-15
KR910700396A (ko) 1991-03-15
EP0409924A1 (de) 1991-01-30
JPH03500441A (ja) 1991-01-31
CN1012751B (zh) 1991-06-05
KR940007227B1 (ko) 1994-08-10
DE3900830C1 (enrdf_load_stackoverflow) 1989-11-02

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